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In order to create new functional materials, the development of molecular complexes consisting of plural organic molecules and metal ions is being studied to realize more sophisticated functions than can be achieved by single molecules. The molecular complex shown in the accompanying figure, for example, is designed to have a light energy conversion capability. It is characterized by the use of oligomethylene-bridged bisphenanthroline. By combining this compound with bipyridines and two types of metal ions ruthenium and osmium - a light-sensitive dinuclear complex in a stable form was obtained. Further studies are being made on the photochemical and photoelectric properties of the complex, and data from measurements using a luminescence spectrophotometer suggest possible intramolecular energy transfer from photo-excited ruthenium to osmium.
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